Previous & Next preset buttons are working successfully but.....

So I've set up 2 buttons that move the preset selection to the next or previous item successfully.
The only issue I have is that, the preset browser window pops up when either of these buttons are pressed.

I currently have a label set up to display the current preset name (thanks to d.healey), so having the preset browser window pop up when next> or <previous are clicked is uneccessary.

Is there a way to stop the preset browser window from showing when these buttons are pressed.